Variational method
[化] 变分法
🧩 词语组成解析
a. 变异的
🗣️ 情景例句
Practice tenses as much as possible.
操练各种时态。
A good name keeps its luster in the dark.
良好的名声在黑暗中也能闪闪发光。
Mr. Smith is in charge of this class.
史密斯老师负责该班。